Regression models

Predictor Variables

Regression Coefficients

Std. Error

t-value

P-value

Model 1

Intercept

−0.308

0.12

−2.6

<0.0001

RMSE = 2.26

CDED

−0.040

0.003

−13.3

<0.0001

SRTM30

0.702

0.012

58.5

<0.0001

SRTM90

−0.598

0.013

−46.0

<0.0001

NBDEM-Fused

0.930

0.006

155.0

<0.0001

Model 2

Intercept

−0.228

0.011

−20.7

<0.0001

RMSE = 2.27

SRTM30

0.537

0.007

76.7

<0.0001

SRTM90

−0.500

0.008

−62.5

<0.0001

NBDEM-Fused

0.957

0.004

239.3

<0.0001

Model 3

Intercept

−0.206

0.012

−17.2

<0.0001

RMSE = 2.32

NBDEM-Fused

0.994

0.001

994.0

<0.0001